Dell Wyse 5070 - 3 orange blinks - corrupt BIOS

BIOS/UEFI Modding BIOS Modding Guides and Problems
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Hi there! I’m having some problems with some Dell Wyse 5070 ThinClients. We have a lot of clients laying around which need, according to the blinks of the orange LED (3 Blink, pause, 3 Blink = BIOS Recovery image not found), a cleaned BIOS. I have dumped the BIOS from a fully working Wyse 5070 and flashed one broken Wyse 5070, but unfortunately, it didn’t really work. The LED is white which means it’s powered on, but as soon as it gives output to all USB ports, it blinks orange again. What should I do in this case?

The chip is a Winbond W25Q128FWSG, 1,8V. The service tag is: B9N45P2.

I hope that there is a way to revive these.

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[Problem] Locked myself out - BIOS/UEFI Modding / BIOS Modding Requests - Win-Raid Forum (level1techs.com)

[Problem] Experimental Dell Wyse 5070 BIOS doesnt Boot - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)

EDIT: Well you can start reading the posts linked for now… witch i doubt it you’ve done it already.

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What are my options there? What could I do in this case?

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Learn about the structure of TXE firmware.

OR

  • Dump a firmware with a programmer
  • Compare static bios parts to stock bios and correct where necessary
  • Clean NVRam
  • Flash it back, see if it works

OR

OR

  • Dump a firmware with a programmer
  • Extract the Flash Descriptor from original firmware
  • Extract the DVAR region from original firmware
  • Extract the DevExp1 region from original firmware
  • Put the Flash descriptor in front of a stock bios
  • Put the DecExp1 region at the end of a stock bios
  • Insert the DVAR region at the correct place replacing into the stock bios
  • Clean ME according to [Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization
  • Flash it back, see if it works

Not all of your machines may have a firmware error, not all may have the same error. Might be corrupted static bios parts, corrupt ME/TXE, might be corrupted NVRAM, might be defective hardware or a combination of all.

Since there’s not much feedback on earlier threads no general recommendation. Easiest way would theoretically be to dump one machine, create a ‘universal’ stock firmware image with clean ME/TXE and then transfer the machine specific DVAR region for each machine.
Missing here unfortunately the proof of concept.

1 Like
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Hi, there. I have the exact issue as you met. I have tried many different combinations but didn’t seem to work.

Any updates on this issue. I’m also looking for a working bios.

Thanks inadvance!

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Hi,

I having question.
My Wyse after bios upgrade have same issue only blink 3 yellow led and wasn’t boot. It is necessary desoldering flash chip from mainboard? . I have CH341 with clip but seems doesn’t work.

Thanks

20240727_145822
20240727_1458221848×4000 945 KB

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That is not the bios chip btw, only 1Mbit…

This might be it, make sure to see the bios chip serial, look it up online, and see the specific voltage. If the max is below 2V, use 1.8v adapter, if the max is 3.3v, you wont need it.
image

1 Like
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Ouch my mistake I hope I didn’t do anything wrong.

Big Thanks and i try witch this chip

Edit: the same situation only 3 orange blink Maybe there is problem with seriall number from another device in dump. I think this is problem with ME Region but now i don’t know how clear this place in .bin and wich data.

2024-07-27 21_48_23-Window

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Ok successful Wyse recovery after 3 orange blink, what i done is exactly in this guide from youtube after that my 5070 back to life :slight_smile:

Thank you for the help earlier and those who are looking for it should use the video, follow step by step what the guest does and it will work, of course you have to look for the right files but they are available need some search to complete but is worth

2 Likes
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can i get ur bios .bin dump